A train 150m long is moving with a velocity of 60km/hr ,the time it takes to cross the bridge of 1km long is?
Answers
Answered by
2
We use the formula velocity = displacement over time. i.e. v = d/t and rearrange it to find the unknown, t.
The velocity is 60km/hr = 60 km/60 min = 1km/min (for simplicity)
To travel 1km (i.e. the front of the train to reach the end of the bridge from the starting pt).
t = d/v = 1km/(1km/min) = 1 min.
However if you want the entire train to cross the end of it, you need to add an extra 100 m (0.1 km) to this figure (since the train is 100 m long).
t = 1.1 km/(1km/min) = 1.1 min = 66 seconds.
Similar questions